X = int(input())

if X >= 400 and X <= 599:
  print(8)
elif X >= 600 and X <= 799:
  print(7)
elif X >= 800 and X <= 999:
  print(6)
elif X >= 1000 and X <= 1199:
  print(5)
elif X >= 1200 and X <= 1399:
  print(4)
elif X >= 1400 and X <= 1599:
  print(3)
elif X >= 1600 and X <= 1799:
  print(2)
elif X >= 1800 and X <= 1999:
  print(1) X = int(input()) X int(input()) int input() input if X >= 400 and X <= 599:
  print(8)
elif X >= 600 and X <= 799:
  print(7)
elif X >= 800 and X <= 999:
  print(6)
elif X >= 1000 and X <= 1199:
  print(5)
elif X >= 1200 and X <= 1399:
  print(4)
elif X >= 1400 and X <= 1599:
  print(3)
elif X >= 1600 and X <= 1799:
  print(2)
elif X >= 1800 and X <= 1999:
  print(1) X >= 400 and X <= 599 X >= 400 X 400 X <= 599 X 599 print(8) print 8 elif X >= 600 and X <= 799:
  print(7) X >= 600 and X <= 799 X >= 600 X 600 X <= 799 X 799 print(7) print 7 elif X >= 800 and X <= 999:
  print(6) X >= 800 and X <= 999 X >= 800 X 800 X <= 999 X 999 print(6) print 6 elif X >= 1000 and X <= 1199:
  print(5) X >= 1000 and X <= 1199 X >= 1000 X 1000 X <= 1199 X 1199 print(5) print 5 elif X >= 1200 and X <= 1399:
  print(4) X >= 1200 and X <= 1399 X >= 1200 X 1200 X <= 1399 X 1399 print(4) print 4 elif X >= 1400 and X <= 1599:
  print(3) X >= 1400 and X <= 1599 X >= 1400 X 1400 X <= 1599 X 1599 print(3) print 3 elif X >= 1600 and X <= 1799:
  print(2) X >= 1600 and X <= 1799 X >= 1600 X 1600 X <= 1799 X 1799 print(2) print 2 elif X >= 1800 and X <= 1999:
  print(1) X >= 1800 and X <= 1999 X >= 1800 X 1800 X <= 1999 X 1999 print(1) print 1 X = int(input()) int(input()) X
X = int(input())

if X >= 400 and X <= 599:
  print(8)
elif X >= 600 and X <= 799:
  print(7)
elif X >= 800 and X <= 999:
  print(6)
elif X >= 1000 and X <= 1199:
  print(5)
elif X >= 1200 and X <= 1399:
  print(4)
elif X >= 1400 and X <= 1599:
  print(3)
elif X >= 1600 and X <= 1799:
  print(2)
elif X >= 1800 and X <= 1999:
  print(1)